Journal of Nanomedicine & Nanotechnology

Tailoring of band-gap and optical properties of ZnO nanoparticles by doping with Fe

22^nd International Conference and Expo on Nanoscience and Molecular Nanotechnology

November 06-08, 2017 | Frankfurt, Germany

Thaiskang Jamatia, David Skoda, Pavel Urbanek, Lukas Munster, Jakub Sevcik and Ivo Kuritka

Tomas Bata University in Zlin, Czech Republic

Posters & Accepted Abstracts: J Nanomed Nanotechnol

Abstract:

ZnO is a semiconductor material widely used in versatile applications in optoelectronic and piezoelectric devices. The doping of ZnO with transition metals like Fe, Co, Mn, Ni, Cr or V opens a new research topic leading to materials with completely different behavior towards magnetic and optical properties. FexZn1-xO nanoparticles were synthesized with varying Fe doping concentrations (x = 0, 0.01, 0.05, 0.10, 0.15) by microwave assisted solvothermal method. The microwave synthesis is based on high temperature decomposition of zinc acetate dihydrate and iron (III) acetylacetonate in diethyleneglycol with the presence of oleic acid as a capping agent. Obtained nanoparticles formed stable colloidal solutions in toluene. These nanocolloids can be furthermore used as precursors for nanocomposites with conductive polymers and for deposition of thin films resulting in utilization in optoelectronic devices. The phase purity and crystal structure of FexZn1-xO was observed in X-ray diffraction (XRD) patterns. Elemental analysis of the dopant Fe was examined by energy-dispersive X-ray spectroscopy (EDS). The morphological studies were done in scanning electron microscope (SEM) and transmission electron microscope (TEM). Optical properties were studied by ultraviolet-visible absorption spectroscopy (UV-Vis) and photoluminescence spectroscopy (PL). Changes in band-gap were observed with different doping concentrations. The experiment results show that the optical properties of ZnO have been successfully tuned by the addition of the Fe dopant.

Biography :

Thaiskang Jamatia is a PhD student in the Faculty of Technology, Tomas Bata University, Czech Republic, under the supervision of Dr. Ivo Kuritka. He obtained his Master’s degree in Nanoscience and Technology from Karunya University, India. His research involves preparation and characterization of nanocomposite thin films for polymer electronics”.